Sorry if this in the wrong forum but I did not see a MAC forum.

My uncle, who is 60+?, has played Halo on PC and loves it.
He asked me alot about FPS games and although I can suggest some games
the ones I know of are all PC or XBOX or PlayStation.

Someone gave my Uncle a MAC, which one is unknown, now
he, my uncle, wants to play games like Halo but he has been told that Halo II is not released on MAC.

Can any one here recomend any FPS that are released on MAC that are FPS that are similar to
HALO?

All sugestions diffrent from "get a PC" will be helpfull.

Thanks